export SOURCE=$(shell /bin/pwd)
export RELATIVE_SOURCE_PATH ?= .

#
# -- AppleARM --
#
export DEFAULT_ARM_MACHINE_CONFIG = ARMPBA8
export DEFAULT_L4_ARM_MACHINE_CONFIG = LOLWUT
export DEFAULT_ARM64_MACHINE_CONFIG = FOUNDATION

#
# gnumake 3.77 support
#
export USE_APPLE_PB_SUPPORT = all

#
# Incremental Build option
#
ifndef INCR_EXPORTHDRS
ifeq ($(shell test -d $$OBJROOT/EXPORT_HDRS;echo $$?),0)
export INCR_EXPORTHDRS	= TRUE
else
export INCR_EXPORTHDRS	= FALSE
endif
endif

#
# Component List
#
ifndef COMPONENT_LIST 
export COMPONENT_LIST 	= osfmk bsd libkern iokit pexpert libsa security
export COMPONENT_LIST_UC := $(shell printf "%s" "$(COMPONENT_LIST)" | $(TR) a-z A-Z)
endif
ifndef	COMPONENT
export COMPONENT 	:= $(firstword $(subst /, ,$(RELATIVE_SOURCE_PATH)))
export COMPONENT_IMPORT_LIST := $(filter-out $(COMPONENT),$(COMPONENT_LIST)) 
else
ifeq	($(COMPONENT), .)
export COMPONENT 	:= $(if $(word 2,$(subst /, ,$(RELATIVE_SOURCE_PATH))),$(word 2,$(subst /, ,$(RELATIVE_SOURCE_PATH))),$(firstword $(subst /, ,$(RELATIVE_SOURCE_PATH))))
export COMPONENT_IMPORT_LIST := $(filter-out $(COMPONENT),$(COMPONENT_LIST)) 
endif
endif

# Architecture options
#
ifndef SUPPORTED_ARCH_CONFIGS
export SUPPORTED_ARCH_CONFIGS = I386 X86_64 ARM ARM64
endif

ifndef ARCH_CONFIGS
ifdef RC_ARCHS
export ARCH_CONFIGS 	:= $(shell printf "%s" "$(RC_ARCHS)" | $(TR) a-z A-Z | sed -E 's/ARMV[0-9][A-Z]?/ARM/g')
else
ifeq ($(PLATFORM),iPhoneOS)
	export ARCH_CONFIGS 	:= ARM
else
	export ARCH_CONFIGS 	:= $(shell arch | $(TR) a-z A-Z | sed -E 's/ARMV[0-9][A-Z]?/ARM/g')
endif
endif
endif
ifdef	ARCH_CONFIG
ifndef ARCH_CONFIG_LC
export ARCH_CONFIG_LC 	:= $(shell printf "%s" "$(ARCH_CONFIG)" | $(TR) A-Z a-z)
endif
endif

#
# Platform options
#
ifndef SUPPORTED_PLATFORMS
export SUPPORTED_PLATFORMS = MacOSX iPhoneOS iPhoneSimulator
endif

# PLATFORM is set earlier in MakeInc.cmd, closer to where decisions about
# platform tools are made

#
# Kernel Configuration options  
#
ifndef SUPPORTED_KERNEL_CONFIGS
export SUPPORTED_KERNEL_CONFIGS = RELEASE DEVELOPMENT DEBUG PROFILE
endif

ifndef DEFAULT_KERNEL_CONFIG
ifeq ($(RC_ProjectName),xnu_debug)
export DEFAULT_KERNEL_CONFIG = DEBUG
else
export DEFAULT_KERNEL_CONFIG = RELEASE
endif
endif

# If KERNEL_CONFIGS is specified it should override KERNEL_CONFIG.
# If KERNEL_CONFIG is specified it will override the default. Will quit with
# error if more than one config is specified.
# If DEFAULT_KERNEL_CONFIG is not specified then it will be built RELEASE.
ifndef KERNEL_CONFIGS
	ifndef KERNEL_CONFIG
	export KERNEL_CONFIGS 	= $(DEFAULT_KERNEL_CONFIG)
	else
	export KERNEL_CONFIGS	= $(KERNEL_CONFIG)
	endif
endif

ifndef KERNEL_CONFIG
export KERNEL_CONFIG 	= $(firstword $(KERNEL_CONFIGS))
endif

ifneq ($(words $(KERNEL_CONFIG)), 1)
$(error There were $(words $(KERNEL_CONFIG)) parameters passed to KERNEL_CONFIG = $(KERNEL_CONFG). \
		Are you sure? To specify multiple configurations please use KERNEL_CONFIGS)
endif

ifndef MACHINE_CONFIG
export MACHINE_CONFIG 	= DEFAULT
endif


#
# Machine Configuration options  
#
export SUPPORTED_I386_MACHINE_CONFIGS := DEFAULT
export SUPPORTED_X86_64_MACHINE_CONFIGS := DEFAULT
export SUPPORTED_ARM_MACHINE_CONFIGS := S5L8920X S5L8922X S5L8930X ARMPBA8 SUN4I OMAP3530 OMAP335X RASPBERRYPI \
					OMAP3430_RX51 ARM_RVEB_V6 S5L8720X S5L8900XRB MSM8960_TOUCHPAD IMX53
export SUPPORTED_ARM64_MACHINE_CONFIGS := DEFAULT VEXPRESS 

#
# Target configuration options.  NOTE - target configurations will 
# override ARCH_CONFIGS and KERNEL_CONFIGS.
#
# Target configs come in groups of three parameters.  The first is the 
# kernel configuration, the second is the architecture configuration,
# and the third is the machine configuration.  You may pass in as
# many groups of configurations as you wish.  Each item passed in is
# separated by whitespace.$
#
# Example:
#	TARGET_CONFIGS="release x86_64 default debug i386 default release arm S5l8920X"
# Parameters may be in upper or lower case (they are converted to upper).
#
# "default" parameter is a special case.  It means use the default value for 
# that parameter.  Here are the default values for each configuration:
#
# default kernel configuration = DEFAULT_KERNEL_CONFIG
# default architecture configuration = system architecture where you are running make.
# default machine configuration for i386 = none at this time.
# default machine configuration for x86_64 = none at this time.
# default machine configuration for arm = "S5L8920X".
#
ifndef TARGET_CONFIGS_UC
ifdef TARGET_CONFIGS
	export TARGET_CONFIGS_UC := $(strip $(shell printf "%s" "$(TARGET_CONFIGS)" | $(TR) a-z A-Z))
	export MACHINE_CONFIG	= $(word 3, $(TARGET_CONFIGS_UC))
	export DEFAULT_KERNEL_CONFIG = $(word 1, $(TARGET_CONFIGS_UC))
else

	ifneq ($(filter %_embedded,$(MAKECMDGOALS)),)
# generate set of standard embedded configs
		export TARGET_CONFIGS = $(TARGET_CONFIGS_EMBEDDED)
	else ifneq ($(filter %_devicemap,$(MAKECMDGOALS)),)
		export TARGET_CONFIGS = $(strip $(foreach my_arch_config, $(ARCH_CONFIGS), $(foreach my_kern_config, $(KERNEL_CONFIGS), $(my_kern_config) $(my_arch_config) $(MACHINE_CONFIG))))
	else
# generate TARGET_CONFIGS using KERNEL_CONFIGS and ARCH_CONFIGS and MACHINE_CONFIG (which defaults to "DEFAULT")
		export TARGET_CONFIGS = $(strip $(foreach my_arch_config, $(ARCH_CONFIGS), $(foreach my_kern_config, $(KERNEL_CONFIGS), $(my_kern_config) $(my_arch_config) $(MACHINE_CONFIG))))
	endif
	export TARGET_CONFIGS_UC := $(shell printf "%s" "$(TARGET_CONFIGS)" | $(TR) a-z A-Z)
	export MACHINE_CONFIG	= $(word 3, $(TARGET_CONFIGS_UC))
	export DEFAULT_KERNEL_CONFIG = $(word 1, $(TARGET_CONFIGS_UC))
endif
endif

export MACHINE_CONFIG_LC := $(shell printf "%s" "$(MACHINE_CONFIG)" | $(TR) A-Z a-z)
export KERNEL_CONFIG_LC := $(shell printf "%s" "$(KERNEL_CONFIG)" | $(TR) A-Z a-z)

#
# Validate configuration options
#
ifneq ($(ARCH_CONFIG),)
ifeq ($(filter $(ARCH_CONFIG),$(SUPPORTED_ARCH_CONFIGS)),)
$(error Unsupported ARCH_CONFIG $(ARCH_CONFIG))
endif
endif

ifneq ($(KERNEL_CONFIG),)
ifeq ($(filter $(KERNEL_CONFIG),$(SUPPORTED_KERNEL_CONFIGS)),)
$(error Unsupported KERNEL_CONFIG $(KERNEL_CONFIG))
endif
endif

ifneq ($(MACHINE_CONFIG),)
ifneq ($(ARCH_CONFIG),)
ifeq ($(filter $(MACHINE_CONFIG),$(SUPPORTED_$(ARCH_CONFIG)_MACHINE_CONFIGS)),)
$(error Unsupported MACHINE_CONFIG $(MACHINE_CONFIG))
endif
endif
endif

ifneq ($(PLATFORM),)
ifeq ($(filter $(PLATFORM),$(SUPPORTED_PLATFORMS)),)
$(error Unsupported PLATFORM $(PLATFORM))
endif
endif

#
# Kernel Configuration to install
#
#  supported install architecture : I386 X86_64 ARM
#
export INSTALL_TYPE 	= $(DEFAULT_KERNEL_CONFIG)

ifndef INSTALL_ARCHS
export INSTALL_ARCHS 	= $(strip $(foreach my_config, $(SUPPORTED_ARCH_CONFIGS), $(filter $(TARGET_CONFIGS_UC),$(my_config))))
export INSTALL_ARCHS_LC := $(shell printf "%s" "$(INSTALL_ARCHS)" | $(TR) A-Z a-z)
endif

export INSTALL_ARCH_DEFAULT	= $(firstword $(INSTALL_ARCHS))
ifeq ($(INSTALL_ARCH_DEFAULT),)
$(error Could not determine INSTALL_ARCH_DEFAULT)
endif

#
# Deployment target flag
#
ifeq ($(UNAME_S),Darwin)
ifndef DEPLOYMENT_TARGET_FLAGS
SDKVERSION=$(shell xcodebuild -sdk $(SDKROOT) -version SDKVersion | head -1)
ifeq ($(PLATFORM),MacOSX)
    export DEPLOYMENT_TARGET_FLAGS := -mmacosx-version-min=$(SDKVERSION)
else ifeq ($(PLATFORM),iPhoneOS)
    export DEPLOYMENT_TARGET_FLAGS := -miphoneos-version-min=$(SDKVERSION)
else ifeq ($(PLATFORM),iPhoneSimulator)
    export DEPLOYMENT_TARGET_FLAGS := 
else
    export DEPLOYMENT_TARGET_FLAGS := 
endif
endif
else
	export DEPLOYMENT_TARGET_FLAGS :=
endif

#
# Standard defines list
#
export DEFINES = -DAPPLE -DKERNEL -DKERNEL_PRIVATE -DXNU_KERNEL_PRIVATE \
       -DPRIVATE -D__MACHO__=1 -Dvolatile=__volatile $(IDENT) -DBOARD_CONFIG_$(MACHINE_CONFIG)

#
# Compiler command
#
KCC  := $(CC)
KC++ := $(CXX)

#
# Compiler warning flags
#

CWARNFLAGS_STD = \
	-Wall -Wno-format-y2k -Wextra -Wstrict-prototypes \
	-Wmissing-prototypes -Wpointer-arith -Wreturn-type -Wcast-qual \
	-Wwrite-strings -Wswitch -Wshadow -Wcast-align -Wchar-subscripts \
	-Winline -Wnested-externs -Wredundant-decls -Wextra-tokens \
	-Wno-private-extern -Wno-cast-align

# Certain warnings are non-fatal (8474835)
CWARNFLAGS_STD += -Wno-error=cast-align -Wno-unused-parameter \
	-Wno-missing-prototypes -Wno-unused-variable \
	-Wno-incompatible-pointer-types

# Can be overridden in Makefile.template or Makefile.$arch
export CWARNFLAGS ?= $(CWARNFLAGS_STD)

define add_perfile_cflags
$(1)_CWARNFLAGS_ADD += $2
endef

CXXWARNFLAGS_STD = \
	-Wall -Wno-format-y2k -Wextra -Wpointer-arith -Wreturn-type \
	-Wcast-qual -Wwrite-strings -Wswitch -Wcast-align -Wchar-subscripts \
	-Wredundant-decls -Wextra-tokens \
	-Wno-private-extern -Wno-cast-align

# Certain warnings are non-fatal (8474835, 9000888)
CXXWARNFLAGS_STD += -Wno-error=cast-align -Wno-error=overloaded-virtual

# Can be overridden in Makefile.template or Makefile.$arch
export CXXWARNFLAGS ?= $(CXXWARNFLAGS_STD)

define add_perfile_cxxflags
$(1)_CXXWARNFLAGS_ADD += $2
endef

#
# Setup for parallel sub-makes based on 2 times number of logical CPUs
#
ifeq ($(UNAME_S),Darwin)
ifndef MAKEJOBS
export MAKEJOBS = --jobs=$(shell expr `/usr/sbin//sysctl -n hw.logicalcpu` \* 2)
endif
else
ifndef MAKEJOBS
export MAKEJOBS := --jobs=$(shell expr `nproc` \* 2)
endif
endif

#
# Default ARCH_FLAGS, for use with compiler/linker/assembler/mig drivers
#
ARCH_FLAGS_I386		  = -arch i386
ARCH_FLAGS_X86_64	  = -arch x86_64
ARCH_FLAGS_ARM64	= -arch arm64

ARCH_FLAGS_ARM		  = $($(addsuffix $(MACHINE_CONFIG),ARCH_FLAGS_ARM_))

ARCH_FLAGS_ARM_S5L8930X	= -arch armv7
ARCH_FLAGS_ARM_S5L8922X	= -arch armv7
ARCH_FLAGS_ARM_S5L8920X	= -arch armv7
ARCH_FLAGS_ARM_S5L8720X	= -arch armv6
ARCH_FLAGS_ARM_S5L8900XRB	= -arch armv6
ARCH_FLAGS_ARM_OMAP3530	= -arch armv7
ARCH_FLAGS_ARM_OMAP3430_RX51 = -arch armv7
ARCH_FLAGS_ARM_OMAP335X	= -arch armv7
ARCH_FLAGS_ARM_ARMPBA8	= -arch armv7
ARCH_FLAGS_ARM_MSM8960_TOUCHPAD	= -arch armv7
ARCH_FLAGS_ARM_RASPBERRYPI	= -arch armv6
ARCH_FLAGS_ARM_ARM_RVEB_V6	= -arch armv6
ARCH_FLAGS_ARM_IMX53		= -arch armv7

#
# Default CFLAGS
#

ifeq ($(UNAME_S),Linux)
	# XXX Fix this.
	ifeq ($(word 2, $(TARGET_CONFIGS_UC)),ARM)
		BUILD_NO_DEBUG := 1
        RC_CFLAGS := -D__arm__ -DARM
	endif
endif

ifdef RC_CFLAGS
export OTHER_CFLAGS	= $(subst $(addprefix -arch ,$(RC_ARCHS)),,$(RC_CFLAGS))
endif

export DSYMRESDIR   = ./Contents/Resources/
export DSYMBUILDDIR = ./Contents/Resources/DWARF/

#
# We must not use -fno-keep-inline-functions, or it will remove the dtrace
# probes from the kernel.
#
export CFLAGS_GEN = $(DEBUG_CFLAGS) -nostdinc \
	-freorder-blocks -fno-builtin -fno-common \
	-fsigned-bitfields $(OTHER_CFLAGS)

ifeq ($(BUILD_STABS),1)
export CFLAGS_GEN += -gstabs+
export BUILD_DWARF = 0
export BUILD_STABS = 1
else
export CFLAGS_GEN += -gdwarf-2
export BUILD_DWARF = 1
export BUILD_STABS = 0
endif

export CFLAGS_RELEASE 	= 
export CFLAGS_DEVELOPMENT 	=
export CFLAGS_DEBUG 	= -fstack-protector-all
export CFLAGS_PROFILE 	= -pg

export CFLAGS_I386 	= -static -Di386 -DI386 -D__I386__ \
				-DPAGE_SIZE_FIXED -msoft-float \
				-integrated-as
export CFLAGS_X86_64	= -Dx86_64 -DX86_64 -D__X86_64__ -DLP64 \
				-DPAGE_SIZE_FIXED -mkernel -msoft-float \
				-integrated-as
export CFLAGS_ARM 	= -Darm -DARM -D__ARM__ -DPAGE_SIZE_FIXED \
				-fno-strict-aliasing -fno-keep-inline-functions \
				-msoft-float
export CFLAGS_ARM64	= -Darm -DARM64 -D__arm__ -DARM -D__ARM64__ -DPAGE_SIZE_FIXED \
				-fno-strict-aliasing -fno-keep-inline-functions -DLP64 -integrated-as

ifeq (-arch armv6,$(ARCH_FLAGS_ARM))
CFLAGS_ARM		+= -mno-thumb
endif
ifeq (-arch armv7,$(ARCH_FLAGS_ARM))
CFLAGS_ARM		+= -mthumb
endif

export CFLAGS_RELEASEARM64 = -O2
export CFLAGS_DEVELOPMENTARM64 = -O2
export CFLAGS_DEBUGARM64 = -O0
export CFLAGS_PROFILEARM64 = -O2

export CFLAGS_RELEASEI386 = -O2
export CFLAGS_DEVELOPMENTI386 = -O2
export CFLAGS_DEBUGI386 = -O0
export CFLAGS_PROFILEI386 = -O2

export CFLAGS_RELEASEX86_64 = -O2
export CFLAGS_DEVELOPMENTX86_64 = -O2
# No space optimization for the DEBUG kernel for the benefit of gdb:
export CFLAGS_DEBUGX86_64 = -O0
export CFLAGS_PROFILEX86_64 = -O2

export CFLAGS_RELEASEARM = -O0
export CFLAGS_DEVELOPMENTARM = -O0
export CFLAGS_DEBUGARM = -O0
export CFLAGS_PROFILEARM = -O0

export CFLAGS 	= $(CFLAGS_GEN) \
		  -DMACHINE_CONFIG_$(MACHINE_CONFIG) \
		  $($(addsuffix $(MACHINE_CONFIG),MACHINE_FLAGS_)) \
		  $($(addsuffix $(ARCH_CONFIG),ARCH_FLAGS_)) \
		  $($(addsuffix $(ARCH_CONFIG),CFLAGS_)) \
		  $($(addsuffix $(KERNEL_CONFIG),CFLAGS_)) \
		  $($(addsuffix $(ARCH_CONFIG), $(addsuffix $(KERNEL_CONFIG),CFLAGS_))) \
		  $(DEPLOYMENT_TARGET_FLAGS) \
		  $(DEFINES)

#
# Default C++ flags
#

OTHER_CXXFLAGS	=

CXXFLAGS_GEN  = -fapple-kext $(OTHER_CXXFLAGS)

CXXFLAGS      = $(CXXFLAGS_GEN) \
		  $($(addsuffix $(ARCH_CONFIG),CXXFLAGS_)) \
		  $($(addsuffix $(KERNEL_CONFIG),CXXFLAGS_))

#
# Assembler command
#
AS	= $(CC)
S_KCC	= $(CC)

#
# Default SFLAGS
#
export SFLAGS_GEN = -D__ASSEMBLER__ $(OTHER_CFLAGS)

export SFLAGS_RELEASE 	= 
export SFLAGS_DEVELOPMENT 	= 
export SFLAGS_DEBUG 	= 
export SFLAGS_PROFILE 	= 

export SFLAGS_I386	= $(CFLAGS_I386)
export SFLAGS_X86_64 	= $(CFLAGS_X86_64)


export SFLAGS 	= $(SFLAGS_GEN) \
		  $($(addsuffix $(MACHINE_CONFIG),MACHINE_FLAGS_)) \
		  $($(addsuffix $(ARCH_CONFIG),ARCH_FLAGS_)) \
		  $($(addsuffix $(ARCH_CONFIG),SFLAGS_)) \
		  $($(addsuffix $(KERNEL_CONFIG),SFLAGS_)) \
		  $(DEPLOYMENT_TARGET_FLAGS) \
		  $(DEFINES)


#
# Linker command
#
LD	= $(KC++) -nostdlib

#
# Default LDFLAGS
#
export LDFLAGS_KERNEL_GEN = \
	$(RC_LDFLAGS) \
	-nostdlib \
	-fapple-kext \
	-read_only_relocs suppress \
	-Wl,-e,__start \
	-Wl,-sectalign,__TEXT,__text,0x1000 \
	-Wl,-sectalign,__TEXT,initcode,0x1000 \
	-Wl,-sectalign,__DATA,__common,0x1000 \
	-Wl,-sectalign,__DATA,__bss,0x1000 \
	-Wl,-sectcreate,__PRELINK_TEXT,__text,/dev/null \
	-Wl,-sectcreate,__PRELINK_STATE,__kernel,/dev/null \
        -Wl,-sectcreate,__PRELINK_STATE,__kexts,/dev/null \
	-Wl,-sectcreate,__PRELINK_INFO,__info,/dev/null \
	-Wl,-new_linker \
	-Wl,-pagezero_size,0x0 \
	-Wl,-version_load_command \
	-Wl,-function_starts

# Availability of DWARF allows DTrace CTF (compressed type format) to be constructed.
# ctf_insert creates the CTF section.  It needs reserved padding in the
# headers for the load command segment and the CTF section structures.
ifeq ($(BUILD_DWARF),1)
export LDFLAGS_KERNEL_GEN += \
    -Wl,-headerpad,152
endif

export LDFLAGS_KERNEL_RELEASE 	=
export LDFLAGS_KERNEL_DEVELOPMENT 	=
export LDFLAGS_KERNEL_DEBUG 	= 
export LDFLAGS_KERNEL_PROFILE 	= 

export LDFLAGS_KERNEL_RELEASEI386     = \
	-Wl,-segaddr,__INITPT,0x00100000 \
	-Wl,-segaddr,__INITGDT,0x00106000 \
	-Wl,-segaddr,__SLEEP,0x00107000 \
	-Wl,-segaddr,__HIB,0x00108000 \
	-Wl,-image_base,0x200000 \
	-Wl,-seg_page_size,__TEXT,0x200000

export LDFLAGS_KERNEL_DEBUGI386 = $(LDFLAGS_KERNEL_RELEASEI386)
export LDFLAGS_KERNEL_DEVELOPMENTI386 = $(LDFLAGS_KERNEL_RELEASEI386)
export LDFLAGS_KERNEL_PROFILEI386 = $(LDFLAGS_KERNEL_RELEASEI386)

# KASLR static slide config:
ifndef SLIDE
SLIDE=0x00
endif
KERNEL_MIN_ADDRESS      := 0xffffff8000000000
KERNEL_BASE_OFFSET      := 0x100000
KERNEL_STATIC_SLIDE     := $(shell printf "0x%016x" \
                           $(( $(SLIDE) << 21 )))
KERNEL_STATIC_BASE      := $(shell printf "0x%016x" \
                           $(( $(KERNEL_MIN_ADDRESS) + $(KERNEL_BASE_OFFSET) )))
KERNEL_HIB_SECTION_BASE := $(shell printf "0x%016x" \
                           $(( $(KERNEL_STATIC_BASE) + $(KERNEL_STATIC_SLIDE) )))
KERNEL_TEXT_BASE        := $(shell printf "0x%016x" \
                           $(( $(KERNEL_HIB_SECTION_BASE) + 0x100000 )))

export LDFLAGS_KERNEL_RELEASEX86_64 = \
	-Wl,-pie \
	-Wl,-segaddr,__HIB,$(KERNEL_HIB_SECTION_BASE) \
	-Wl,-image_base,$(KERNEL_TEXT_BASE) \
	-Wl,-seg_page_size,__TEXT,0x200000 \
	-Wl,-sectalign,__DATA,__const,0x1000 \
	-Wl,-sectalign,__DATA,__sysctl_set,0x1000 \
	-Wl,-sectalign,__HIB,__bootPT,0x1000 \
	-Wl,-sectalign,__HIB,__desc,0x1000 \
	-Wl,-sectalign,__HIB,__data,0x1000 \
	-Wl,-sectalign,__HIB,__text,0x1000 \
	-Wl,-sectalign,__HIB,__const,0x1000 \
	-Wl,-sectalign,__HIB,__bss,0x1000 \
	-Wl,-sectalign,__HIB,__common,0x1000 \

export LDFLAGS_KERNEL_RELEASEARM64 = \
	-Wl,-pie \
	-Wl,-static \
	-Wl,-image_base,0xffffff8000202000
export LDFLAGS_KERNEL_DEBUGARM64 = $(LDFLAGS_KERNEL_RELEASEARM64)
export LDFLAGS_KERNEL_DEVELOPMENTARM64 = $(LDFLAGS_KERNEL_RELEASEARM64)

# Define KERNEL_BASE_OFFSET so known at compile time:
export CFLAGS_X86_64 += -DKERNEL_BASE_OFFSET=$(KERNEL_BASE_OFFSET)

export LDFLAGS_KERNEL_DEBUGX86_64 = $(LDFLAGS_KERNEL_RELEASEX86_64)
export LDFLAGS_KERNEL_DEVELOPMENTX86_64 = $(LDFLAGS_KERNEL_RELEASEX86_64)
export LDFLAGS_KERNEL_PROFILEX86_64 = $(LDFLAGS_KERNEL_RELEASEX86_64)

export LDFLAGS_KERNEL_RELEASEARM     = \
	-Wl,-pie \
	-Wl,-static \
	-Wl,-image_base,0x80001000 \
	-Wl,-seg_page_size,__TEXT,0x1000 \
	-Wl,-sectalign,__DATA,__const,0x1000 \
	-Wl,-sectalign,__DATA,__sysctl_set,0x1000 \
	-Wl,-exported_symbols_list,$(TARGET)/kernel-kpi.exp \
	-Wl,-alias_list $(SRCROOT)/osfmk/arm/intrinsic.map

export LDFLAGS_KERNEL_DEVELOPMENTARM     = \
	-Wl,-pie \
	-Wl,-static \
	-Wl,-seg_page_size,__TEXT,0x1000 \
	-Wl,-sectalign,__DATA,__const,0x1000 \
	-Wl,-sectalign,__DATA,__sysctl_set,0x1000 \
	-Wl,-image_base,0x80001000 \
	-Wl,-alias_list $(SRCROOT)/osfmk/arm/intrinsic.map

export LDFLAGS_KERNEL_DEBUGARM = $(LDFLAGS_KERNEL_DEVELOPMENTARM)

# Offset image base by page to have iBoot load kernel TEXT correctly.
# First page is used for various purposes : sleep token, reset vector.

export LDFLAGS_KERNEL	= $(LDFLAGS_KERNEL_GEN) \
		  $($(addsuffix $(MACHINE_CONFIG),MACHINE_FLAGS_)) \
		  $($(addsuffix $(ARCH_CONFIG),ARCH_FLAGS_)) \
		  $($(addsuffix $(ARCH_CONFIG),LDFLAGS_KERNEL_)) \
		  $($(addsuffix $(KERNEL_CONFIG),LDFLAGS_KERNEL_)) \
		  $($(addsuffix $(ARCH_CONFIG), $(addsuffix $(KERNEL_CONFIG),LDFLAGS_KERNEL_))) \
		  $(DEPLOYMENT_TARGET_FLAGS)

#
# Default runtime libraries to be linked with the kernel
#
export LD_KERNEL_LIBS	= -lcc_kext


#
# Default INCFLAGS
#
export INCFLAGS_IMPORT 	= $(patsubst %, -I$(OBJROOT)/EXPORT_HDRS/%, $(COMPONENT_IMPORT_LIST))
export INCFLAGS_EXTERN 	= -I$(OBJROOT)/EXTERN_HDRS -I$(SRCROOT)/EXTERNAL_HEADERS -I$(SRCROOT)/EXTERNAL_HEADERS/bsd
export INCFLAGS_GEN	= -I$(SRCROOT)/$(COMPONENT) -I$(OBJROOT)/EXPORT_HDRS/$(COMPONENT)
export INCFLAGS_POSIX	= -I$(OBJROOT)/EXPORT_HDRS/bsd
export INCFLAGS_LOCAL	= -I.

export INCFLAGS 	= $(INCFLAGS_LOCAL) $(INCFLAGS_GEN) $(INCFLAGS_IMPORT) $(INCFLAGS_EXTERN) $(INCFLAGS_MAKEFILE)

#
# Default MIGFLAGS
#
export MIGFLAGS	= $(DEFINES) $(INCFLAGS) $($(addsuffix $(ARCH_CONFIG),CFLAGS_)) \
			  $($(addsuffix $(ARCH_CONFIG),ARCH_FLAGS_)) \
			  $(DEPLOYMENT_TARGET_FLAGS)

#
# Support for LLVM Link Time Optimization (LTO)
#

ifeq ($(BUILD_LTO),1)
export CFLAGS_GEN	+= -flto
export CXXFLAGS_GEN	+= -flto
export LDFLAGS_KERNEL_GEN	+= -Wl,-object_path_lto,$(TARGET)/lto.o
export CFLAGS_NOLTO_FLAG = -fno-lto
export BUILD_MACHO_OBJ	= 0
export BUILD_LTO	= 1
else
export CFLAGS_NOLTO_FLAG =
export BUILD_MACHO_OBJ	= 1
export BUILD_LTO	= 0
endif

#
# Support for LLVM Integrated Assembler with clang driver
#
ifeq ($(BUILD_INTEGRATED_ASSEMBLER),1)
export SFLAGS_GEN	+= -integrated-as
export CFLAGS_GEN	+= -integrated-as
export CXXFLAGS_GEN	+= -integrated-as
export SFLAGS_NOINTEGRATEDAS_FLAGS	= -no-integrated-as
export CFLAGS_NOINTEGRATEDAS_FLAGS	= -no-integrated-as
else
export SFLAGS_NOINTEGRATEDAS_FLAGS	= 
export CFLAGS_NOINTEGRATEDAS_FLAGS	= 
endif

#
# Default VPATH
#
empty:=
space:= $(empty) $(empty)
export VPATH_IMPORT 	= $(subst $(space),:,$(patsubst %,$(OBJROOT)/EXPORT_HDRS/%,$(strip $(COMPONENT_IMPORT_LIST)))):
export VPATH_EXTERN 	= $(OBJROOT)/EXTERN_HDRS:
export VPATH_GEN	= .:$(SOURCE):

export VPATH	 	= $(VPATH_GEN)$(VPATH_IMPORT)$(VPATH_EXTERN)$(VPATH_MAKEFILE)

#
# Macros that control installation of kernel and its header files
#
# install flags for header files
# 
INSTALL_FLAGS = -c -m 0444
FILE_INSTALL_FLAGS = -c -m 0644
DATA_INSTALL_FLAGS = -c -m 0644

#
# Header file destinations
#
ifeq ($(RC_ProjectName),xnu_headers_Sim)
	HEADER_INSTALL_PREFIX = $(SDKROOT)
else
	HEADER_INSTALL_PREFIX = 
endif

FRAMEDIR = $(HEADER_INSTALL_PREFIX)/System/Library/Frameworks

SINCVERS = B
SINCFRAME = $(FRAMEDIR)/System.framework
SINCDIR = $(SINCFRAME)/Versions/$(SINCVERS)/Headers
SPINCDIR = $(SINCFRAME)/Versions/$(SINCVERS)/PrivateHeaders
SRESDIR = $(SINCFRAME)/Versions/$(SINCVERS)/Resources

ifndef INCDIR
    INCDIR = $(HEADER_INSTALL_PREFIX)/usr/include
endif
ifndef LCLDIR
    LCLDIR = $(SPINCDIR)
endif

KINCVERS = A
KINCFRAME = $(FRAMEDIR)/Kernel.framework
KINCDIR = $(KINCFRAME)/Versions/$(KINCVERS)/Headers
KPINCDIR = $(KINCFRAME)/Versions/$(KINCVERS)/PrivateHeaders
KRESDIR = $(KINCFRAME)/Versions/$(KINCVERS)/Resources

XNU_PRIVATE_UNIFDEF = -UMACH_KERNEL_PRIVATE -UBSD_KERNEL_PRIVATE -UIOKIT_KERNEL_PRIVATE -ULIBKERN_KERNEL_PRIVATE -ULIBSA_KERNEL_PRIVATE -UPEXPERT_KERNEL_PRIVATE -UXNU_KERNEL_PRIVATE

PLATFORM_UNIFDEF = $(foreach x,$(SUPPORTED_PLATFORMS),$(if $(filter $(PLATFORM),$(x)),-DPLATFORM_$(x),-UPLATFORM_$(x)))

SPINCFRAME_UNIFDEF = $(PLATFORM_UNIFDEF) $(XNU_PRIVATE_UNIFDEF) -UKERNEL_PRIVATE -UKERNEL -DPRIVATE -U_OPEN_SOURCE_
SINCFRAME_UNIFDEF  = $(PLATFORM_UNIFDEF) $(XNU_PRIVATE_UNIFDEF) -UKERNEL_PRIVATE -UKERNEL -UPRIVATE -D_OPEN_SOURCE_
KPINCFRAME_UNIFDEF = $(PLATFORM_UNIFDEF) $(XNU_PRIVATE_UNIFDEF) -DKERNEL_PRIVATE -DPRIVATE -DKERNEL -U_OPEN_SOURCE_
KINCFRAME_UNIFDEF  = $(PLATFORM_UNIFDEF) $(XNU_PRIVATE_UNIFDEF) -UKERNEL_PRIVATE -UPRIVATE -DKERNEL -D_OPEN_SOURCE_


#
# Component Header file destinations
#
EXPDIR = EXPORT_HDRS/$(COMPONENT)

#
# Strip Flags
#
export STRIP_FLAGS_RELEASE	= -S -x 
export STRIP_FLAGS_DEVELOPMENT	= -S -x 
export STRIP_FLAGS_DEBUG	= -S 
export STRIP_FLAGS_PROFILE	= -S -x

export STRIP_FLAGS 	= $($(addsuffix $(KERNEL_CONFIG),STRIP_FLAGS_)) 

#
# dsymutil flags
#
export DSYMUTIL_FLAGS_I386 = --arch=i386
export DSYMUTIL_FLAGS_X86_64 = --arch=x86_64

export DSYMUTIL_FLAGS = $($(addsuffix $(ARCH_CONFIG),DSYMUTIL_FLAGS_))

#
# Man Page destination
#
MANDIR = usr/share/man

#
# DEBUG alias location
#
DEVELOPER_EXTRAS_DIR = AppleInternal/Developer/Extras

#
#  This must be here before any rules are possibly defined by the
#  machine dependent makefile fragment so that a plain "make" command
#  always works.  The config program will emit an appropriate rule to
#  cause "all" to depend on every kernel configuration it generates.
#

default: all

# vim: set ft=make:
